<!DOCTYPE html>
<html>
<head>
<meta charset="ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
	<form action="./Calculadora" method="post">
		<input type="text" name="valor1" >valor 1<br>
		<input type="text" name="valor2">valor 2<br>
		<input type="text" name="operador">operador<br>
		<input type="submit" value="Calcular">
	</form>
</body>
</html>